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[Kernel] Open /dev/random and /dev/urandom as host RNG descriptors 

Co-authored-by: Sekai <140012992+SekaixX@users.noreply.github.com>
This commit is contained in:
ParantezTech 2026-10-08 23:44:39 +03:00
parent d3deab28aa
commit 4d8f5a75d5
1 changed files with 18 additions and 0 deletions
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18
src/SharpEmu.Libs/Kernel/KernelMemoryCompatExports.cs
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@ -97,6 +97,7 @@ public static partial class KernelMemoryCompatExports
private static readonly object _fdGate = new(); private static readonly object _fdGate = new();
private static readonly Dictionary<int, FileStream> _openFiles = new(); private static readonly Dictionary<int, FileStream> _openFiles = new();
private static readonly HashSet<int> _randomDeviceDescriptors = new();
private static readonly Dictionary<int, HostMovieBridge.BinkGuestCompletionShim> private static readonly Dictionary<int, HostMovieBridge.BinkGuestCompletionShim>
_binkGuestCompletionShims = new(); _binkGuestCompletionShims = new();
private static readonly Dictionary<int, string> _observedBinkGuestFiles = new(); private static readonly Dictionary<int, string> _observedBinkGuestFiles = new();
@ -1453,6 +1454,19 @@ public static partial class KernelMemoryCompatExports
return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT; return (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT;
} }
if (IsRandomDevicePath(guestPath) && (flags & O_DIRECTORY) == 0)
{
var randomFd = (int)Interlocked.Increment(ref _nextFileDescriptor);
lock (_fdGate)
{
_randomDeviceDescriptors.Add(randomFd);
}
LogOpenTrace($"_open random-device path='{guestPath}' flags=0x{flags:X8} fd={randomFd}");
ctx[CpuRegister.Rax] = unchecked((ulong)randomFd);
return (int)OrbisGen2Result.ORBIS_GEN2_OK;
}
var hostPath = ResolveGuestPath(guestPath); var hostPath = ResolveGuestPath(guestPath);
var access = ResolveOpenAccess(flags); var access = ResolveOpenAccess(flags);
var mode = ResolveOpenMode(flags, access); var mode = ResolveOpenMode(flags, access);
@ -6947,6 +6961,10 @@ public static partial class KernelMemoryCompatExports
return !string.IsNullOrWhiteSpace(hostPath) && TryWriteHostPathStat(ctx, statAddress, hostPath!, isDirectory); return !string.IsNullOrWhiteSpace(hostPath) && TryWriteHostPathStat(ctx, statAddress, hostPath!, isDirectory);
} }
private static bool IsRandomDevicePath(string path) =>
string.Equals(path, "/dev/random", StringComparison.Ordinal) ||
string.Equals(path, "/dev/urandom", StringComparison.Ordinal);
private static bool TryWriteHostPathStat(CpuContext ctx, ulong statAddress, string hostPath) private static bool TryWriteHostPathStat(CpuContext ctx, ulong statAddress, string hostPath)
{ {
var isDirectory = Directory.Exists(hostPath); var isDirectory = Directory.Exists(hostPath);